Gauge-Invariant Variables on Cosmological Hypersurfaces

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dc.creatorMalik, Karim A.
dc.creatorWands, David
dc.date1998-04-21
dc.date.accessioned2026-07-07T03:32:20Z
dc.date.available2026-07-07T03:32:20Z
dc.descriptionWe show how gauge-invariant cosmological perturbations may be constructed by an unambiguous choice of hypersurface-orthogonal time-like vector field (i.e., time-slicing). This may be defined either in terms of the metric quantities such as curvature or shear, or using some matter field. As an example, we show how linear perturbations in the covariant fluid-flow approach can then be presented in an explicitly gauge-invariant form in the coordinate based formalism.
dc.description4 pages, Revtex, no figures
dc.identifierhttps://arxiv.org/abs/gr-qc/9804046
dc.identifierhttp://arxiv.org/abs/gr-qc/9804046
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/36195
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleGauge-Invariant Variables on Cosmological Hypersurfaces
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